题目内容

If the PSCO has clear grounds for carrying out a more detailed inspection,()

A. the master should be immediately informed
B. the master will be prohibited from contacting the Administration or other organization
C. he will carry out the inspection after the master be informed and be ready
D. he will carry out the inspection without informing the master

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点火线圈初级电路的接通时间取决于()。

A. 断电器触电的闭合角
B. 发动机转速
C. B都正确
D. B都不正确

通常认为春玉米播种的适宜时期是5-10cm土壤温度稳定在()

1mol游离氢燃烧可释放出的热量几乎是1mol碳燃烧所释放出热量的()倍。

A. 2;
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C. 4;
D. 5。

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